Home / 257,526.81-355,380.45-142,803.63

Finding the Fourth Proportional to 257,526.81, 355,380.45 and 142,803.63

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Solution

The fourth proportional to 257,526.81, 355,380.45 and 142,803.63 is: 197,065.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,526.81 : 355,380.45 = 142,803.63 : x
  2. Step 2: Convert to fraction form
    257,526.81/355,380.45 = 142,803.63/x
  3. Step 3: Cross multiply
    257,526.81x = 355,380.45 × 142,803.63
  4. Step 4: Simplify right side
    257,526.81x = 50,749,615,800.11
  5. Step 5: Solve for x
    x = 50,749,615,800.11/257,526.81
  6. Step 6: Final answer
    x = 197,065.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.